Table 2 Pre-Existing Headaches, Contributing Factors and Diagnosis Timelines
Variables | Total N = 179 | Confirmed N = 82 | Unconfirmed N = 97 |
|---|---|---|---|
N (%) | N (%) | N (%) | |
Headache before onset of PDPH | |||
Yes | 40 (22.3) | 22 (26.8) | 18 (18.6) |
No | 139 (77.7) | 60 (73.2) | 79 (81.4) |
Type of Headache before onset of PDPH | |||
Migraine | 14 (35.0) | 11 (50.0) | 3 (16.7) |
Tension Headache | 17 (42.5) | 8 (36.4) | 9 (50.0) |
No Physician Consultation | 9 (22.5) | 3 (13.6) | 6 (33.4) |
Frequency of Headache before onset of PDPH | |||
Less than one day per month | 22 (55.0) | 10 (45.5) | 12 (66.7) |
One to 14 days per month | 16 (40.0) | 11 (50.0) | 5 (27.8) |
15 or more days per month | 2 (5.0) | 1 (4.5) | 1 (5.6) |
PDPH Attributed to | |||
Lumbar puncture for CSF examination | 88 (49.2) | 44 (53.7) | 44 (45.4) |
Lumbar puncture for imaging procedures | 8 (4.5) | 6 (7.3) | 2 (2.1) |
Epidural Anaesthesia | 41 (22.9) | 11 (13.4) | 30 (30.9) |
Epidural Injections | 30 (16.8) | 12 (14.6) | 18 (18.6) |
Spinal Surgery | 12 (6.7) | 9 (11.0) | 3 (3.1) |
Time Before Suspicion | |||
Less than one day | 21 (11.7) | 15 (18.3) | 6 (6.2) |
Less than one week | 27 (15.1) | 4 (4.9) | 23 (23.7) |
1 to 4 weeks | 27 (15.1) | 15 (18.3) | 12 (12.4) |
1 to 3 months | 51 (28.5) | 29 (35.4) | 22 (22.7) |
More than three months | 53 (29.6) | 19 (23.2) | 34 (35.1) |
Time Before Diagnosis | |||
Less than one day | 15 (8.4) | 9 (11.0) | 6 (6.2) |
Less than one week | 20 (11.2) | 6 (7.3) | 14 (14.4) |
1 to 4 weeks | 12 (6.7) | 5 (6.1) | 7 (7.2) |
1 to 3 months | 32 (17.9) | 20 (24.4) | 12 (12.4) |
More than three months | 100 (55.9) | 42 (51.2) | 58 (59.8) |